Black hairy tongue

Abstract

An 8-year-old boy presented with asymptomatic blackish discolouration on the tongue. One week prior, he was treated with co-amoxiclav and azithromycin for pneumonia for 5 days. Discolouration was noted to be gradually increasing. The child was not on any other medication / application on the tongue. A local examination showed black stained filiform papillae on the dorsum of the tongue (Figure 1)